Zivame — Refund not initiated

I've ordered a pajama set and it came out bigger than my size so I've initiated return on 13th of August. After initiating return within 2-3 hours delivery boy came and took the product. After 2 days I got call from delivery boy saying he got notification to pick the product. He told he'll cancel the pickup request as he already picked the product. It has been 14 days till the date the product has been taken away but still my order status is on pick up initiated. I've called many times to zivame customer care they are saying to wait for 24-48 hrs to get my refund but I'm not getting any update. Product has been taken on 13th August n its 26th of August now. I request you to please update my orders status and initiate refund as earlier as possible. My order number is 79991462.